Home / 7,319.12-10,973-3,618.80

Finding the Fourth Proportional to 7,319.12, 10,973 and 3,618.80

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Solution

The fourth proportional to 7,319.12, 10,973 and 3,618.80 is: 5,425.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.12 : 10,973 = 3,618.80 : x
  2. Step 2: Convert to fraction form
    7,319.12/10,973 = 3,618.80/x
  3. Step 3: Cross multiply
    7,319.12x = 10,973 × 3,618.80
  4. Step 4: Simplify right side
    7,319.12x = 39,709,092.40
  5. Step 5: Solve for x
    x = 39,709,092.40/7,319.12
  6. Step 6: Final answer
    x = 5,425.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.